Put Xm on my '94SE.Hooked adapter into antenna lead under seat. Found Key on 12 volt supply and a ground. I mounted my dock just behind GoldWing emblem down from ignition switch. There are many choices for handlebar mounting.
Lots of opinions on antenna location,i put mine center of trunklid just behind seatback. Works about 2/3 of the time, due to crappy service..